Dr. Amesh Adalja: 'I don't think we ever got over the first wave'

03:22

Dr. Amesh Adalja joins Andrea Mitchell to discuss the fall surge of coronavirus cases in the U.S. "I don't think we ever got over the first wave," Dr. Adalja says. "We're seeing acceleration as this virus exhibits seasonality as other coronaviruses do as it gets colder. We have to prepare, because we can't have hospitals get into trouble again."